Symptom
In the vmanage-server-gc.log we see below entries:
Note Title : vManage logs2020-07-27T10:11:13.967-0400: 1981089.353: [GC concurrent-root-region-scan-start]
2020-07-27T10:11:13.982-0400: 1981089.368: [GC concurrent-root-region-scan-end, 0.0157238 secs]
2020-07-27T10:11:13.982-0400: 1981089.368: [GC concurrent-mark-start]
2020-07-27T10:11:14.280-0400: 1981089.666: [GC pause (G1 Evacuation Pause) (young) 15G->14G(17G), 0.0748470 secs]
2020-07-27T10:11:14.692-0400: 1981090.078: [GC pause (G1 Evacuation Pause) (young) 15G->15G(17G), 0.0767528 secs]
2020-07-27T10:11:15.114-0400: 1981090.500: [GC pause (G1 Evacuation Pause) (young) 15G->15G(17G), 0.0705769 secs]
2020-07-27T10:11:15.510-0400: 1981090.896: [GC pause (G1 Evacuation Pause) (young) 15G->15G(17G), 0.0641166 secs]
2020-07-27T10:11:15.919-0400: 1981091.305: [GC pause (G1 Evacuation Pause) (young) 16G->15G(17G), 0.0760283 secs]
2020-07-27T10:11:16.240-0400: 1981091.626: [GC pause (G1 Evacuation Pause) (young) 16G->15G(17G), 0.0802532 secs]
2020-07-27T10:11:16.627-0400: 1981092.013: [GC pause (G1 Evacuation Pause) (young)-- 16G->16G(17G), 0.1615012 secs]
2020-07-27T10:11:16.940-0400: 1981092.326: [GC pause (G1 Evacuation Pause) (young)-- 16G->16G(17G), 1.2021533 secs]
2020-07-27T10:11:18.162-0400: 1981093.548: [GC pause (G1 Evacuation Pause) (young) 16G->16G(17G), 0.0468194 secs]
2020-07-27T10:11:18.228-0400: 1981093.614: [Full GC (Allocation Failure)
Conditions
Vmanage is receiving API calls
Workaround
To workaround the issue we need to restart the NMS Application server.
